CN102626725A

CN102626725A - Method for replacing take-up mandrel of CSP (Cast Steel Plate) hot-rolled sheet

Info

Publication number: CN102626725A
Application number: CN2012101007668A
Authority: CN
Inventors: 马冬冬; 申家华
Original assignee: Magang Group Holding Co Ltd; Maanshan Iron and Steel Co Ltd
Current assignee: Magang Group Holding Co Ltd; Maanshan Iron and Steel Co Ltd
Priority date: 2012-04-09
Filing date: 2012-04-09
Publication date: 2012-08-08
Anticipated expiration: 2032-04-09
Also published as: CN102626725B

Abstract

The invention discloses a method for replacing a take-up mandrel of a CSP (Cast Steel Plate) hot-rolled sheet, which belongs to steel rolling equipment and particularly relates to a take-up device for a hot-rolled sheet. A take-up mechanism consists of a mandrel, an output side bearing, a support bearing, a mandrel and speed reducer catcher, a speed reducer, a speed reducer and motor catcher and a motor. The method for replacing the mandrel comprises the following steps of: opening a bearing support arm and a take-up assisting arm; stopping a medium and a power supply; detaching a mandrel and speed reducer catcher protective cover, a bolt of the protective cover and a hydraulic lubricating hose; detaching a support bearing gland bolt; arranging a hanger; hanging a support bearing gland out; hanging the mandrel out; and installing the mandrel. The method has the advantages that: the method has a novel concept, the mandrel is disassembled and assembled directly through reasonable matching of a travelling crane and a bottle gourd, the procedure is simplified, convenience is brought to operate, and construction is safe; the speed reducer is not required to be detached or installed in an overhauling process, mandrel detaching and installing time is shortened greatly, the working efficiency is increased, the construction quality is ensured, and the construction cost is reduced; and the equipment operation rate of the take-up device is increased, and successful steel rolling production is ensured.

Description

The CSP SPHC batches mandrel replacing method

Technical field

The invention belongs to steel rolling equipment, relate in particular to the devices for taking-up of SPHC.

Background technology

It is the important process process of CSP Rolling Production that coiled sheet batches, and devices for taking-up is a visual plant of realizing that thin plate batches.This device send mechanism, wrapper structure, spooler, hydraulic pressure and lubricating structure etc. to form by adding.In the Rolling Production process, wherein the spooler mandrel send mechanism guides through adding, and wrapper structure aid in guide is batched moulding, packing and collection to the long steel band of hundreds of rice.Because the mandrel of spooler is the nucleus equipment of devices for taking-up, mandrel is changed in maintenance often.Now mandrel replacing method is: shut down, open adding of being associated with mandrel and send mechanism and wrapper structure, stop changing mandrel after previous work such as safety verification is carried out in the medium pressure release.When removing mandrel, at first throw off mandrel and reductor catcher, reductor and motor catcher, carry out position mark; Remove the reductor foundation bolt then; Remove medium pipeline; Hang out reductor; Remove supporting bearing base gland and locating ring at last, hang out mandrel; Undertaken by above-mentioned reverse order when mandrel is installed, press then that mark is in place, the centering position.Have defective: working space is narrow and small, because the hanging device tonnage is big, possibly runs into drive part in the protectiveness disassembly process and interfere with other associated mechanisms in the hoisting process, and the lifting difficulty needs centering equipment many in returning process of assembling, and the time is long, and construction cost is high; In the mandrel hoisting process, owing to there is not cucurbit adjustment lifting angle, hoisting difficulty is big and potential safety hazard is many; The many long construction periods of lifting operation, coiling machine is long downtime, has reduced production efficiency.

Summary of the invention

There is defective in order to overcome prior art, the purpose of this invention is to provide a kind of CSP SPHC and batch mandrel replacing method, utilization hoisting point position stress point; Cooperate driving to change the angle of mandrel, directly hang out mandrel, simplify the operation; Shorten the engineering time, improve equipment operation rate.

The thin mandrel replacing method of batching of CSP hot rolling: spooler is connected and composed by mandrel, outlet side bearing, supporting bearing base, mandrel and reductor catcher, reductor, reductor and motor catcher, motor successively; Under the state of shutting down, change mandrel and carry out according to the following steps:

1, open coil of strip outlet side bearings arm, fixed with lock;

2, open and help the volume arm, fixed with lock;

3, stop medium pressure release, power failure;

4, remove mandrel and deceleration tractor driver protective cover, above its framework, establish envelope and hang cucurbit, cooperate driving to pour out mandrel;

5, remove mandrel and reductor catcher bolt, carry out the catcher's position mark;

6, remove the lubricated flexible pipe of mandrel hydraulic hose and supporting bearing base, marked and tube head protection;

7, the suspender driving is set and hangs suspender belt, steel cable, chain block;

8, removing the spring bearing gland bolt utilizes the hydraulic bolt preloader to draw high the dismounting bolt;

9, hang out the spring bearing gland, remove locating ring in the bearing;

10, hang out the mandrel driving and hang two stress points that mandrel is established by suspender belt, steel cable and chain block, utilization envelope is again hung cucurbit, adjusts mandrel and horizontal vertical angle 8-10 degree, and rotates the 7-10 degree with the roll line inclination angle, derives mandrel, leaves devices for taking-up;

11, mandrel is installed, cleaned connecting portion guarantees that rotary part is lubricated good, goes slick, and the centering position mark is undertaken by the opposite step of dismounting.

Compared with prior art, advantage is: method is novel, the reasonable cooperation of utilization driving and cucurbit, and directly the dismounting mandrel is simplified working process, and is easy to operate, construction safety; Reductor is not dismantled, installed to maintenance process, the time of shortened dismounting greatly, mandrel being installed, improved work efficiency, and guaranteed construction quality, reduced construction cost; Improve the devices for taking-up equipment operation rate, strong guarantee steel rolling is produced and is carried out smoothly.

Description of drawings

The contrast accompanying drawing is described further the present invention below.

Fig. 1 is that the CSP SPHC batches mandrel replacing method operation sketch map.

Among the figure: 1, mandrel 2, outlet side bearing 3, spring bearing 4, mandrel and reductor catcher 5, reductor 6, reductor and motor catcher 7, motor 8, suspender belt and steel cable 9, chain block 10, envelope are hung cucurbit 11. and are helped volume arm 12. support arms 13. mandrel hydraulic hoses.

The specific embodiment

By Fig. 1, can find out, the CSP spooler by mandrel 1, outlet side bearing 2, supporting bearing base 3, mandrel and reductor catcher 4, reductor 5, reductor and motor take over 6 and motor 7 connect and compose successively.Under stopped status, change mandrel and follow these steps to carry out:

1, opens coil of strip outlet side bearings arm 12, lock with safety pin.

2, open help the volume arm 11, pin with safety pin.

3, stop medium pressure release, power failure.

4, remove mandrel and reductor and take over 4 protective covers, above its framework, establish the 3t envelope and hang cucurbit 10.

5, remove mandrel and reductor and take over 4 bolts, carry out position mark.

6, remove mandrel hydraulic hose 13 and supporting bearing base lubrication management, marked and tube head protection.

7, the suspender driving is set and hangs 20t suspender belt and 8,2 5t chain blocks 9 of steel cable.

8, remove spring bearing 3 gland bolts, utilize the hydraulic bolt preloader to draw high the dismounting bolt, pretightning force 950-1000KN.

9, hang out spring bearing 3 glands, remove locating ring in the bearing.

10, hang out mandrel, suspender belt and steel cable 8, chain block 9 are hung in driving (among the figure mark), and mandrel is established two stress points; Hang on suspender belt and the steel cable; Utilize envelope to hang cucurbit adjustment mandrel vertical angle 9 degree and inclination angle 8 degree, utilize envelope to hang cucurbit again and derive mandrel, hang and batch the position.

11, mandrel is installed, has been cleared up connecting portion, rotary part is lubricated good, goes slick, and the centering position mark is undertaken by the above-mentioned mandrel reverse procedure of unloading.

Claims

1.CSP the thin mandrel replacing method of batching of hot rolling: spooler connects (6) hand, inferior the connecting and composing of motor (7) by mandrel (1), outlet side bearing (2), supporting bearing base (3), mandrel and reductor catcher (4), reductor (5), reductor and motor; Under the state of shutting down, change mandrel and carry out according to the following steps:

1), open coil of strip outlet side bearings arm (12), lock with safety pin;

2) open help the volume arm (11), pin with safety pin;

3), stop medium pressure release, power failure;

4), remove mandrel and deceleration tractor driver protective cover, above its framework, establish envelope and hang cucurbit, cooperating drives a vehicle pours out mandrel;

5), remove mandrel and take over bolt with reductor, carry out the catcher's position mark;

6), remove mandrel hydraulic hose (13) and the lubricated flexible pipe of supporting bearing base, marked and tube head protection;

7), suspender driving is set and hangs suspender belt and steel cable (8), chain block (9);

8), remove spring bearing (3) gland bolt and utilize the hydraulic bolt preloader to draw high the dismounting bolt, pretightning force 950-1000KN;

9), hang out spring bearing gland, locating ring in the dismounting bearing;

10), hang out mandrel driving and hang two stress points that mandrel is established by suspender belt and steel cable and chain block, utilize envelope to hang cucurbit again, adjustment mandrel and horizontal vertical angle 8-10 degree, and with roll line inclination angle rotation 7-10 degree, the derivation mandrel leaves devices for taking-up;

11), mandrel is installed, cleaned connecting portion guarantees that rotary part is lubricated good, goes slick, the centering position mark is undertaken by the opposite step of dismounting.